2007-2010 Kawasaki Ultra 250X/260X/260LX PWC Factory Service Manual, Page 143Get this manual
3-84 FUEL SYSTEM (OFt) Air Bypass System
If the blow off valve does not operate as describedreplace it with new oneBlow off Valve Opening Pressure (Close - Open) Standard: more than 81 kPa (0.83 kgfcm2)
Low Compressed Air [A] Air Cannot Flow [8]
Off the portion of is in atomospheric pressure, the portion of becomes charging pressureThe standard of the above blow off valve opening pressure can be calcurated by the followingStandardCharging Pressure (Portion of A)Atmospheric Pressure (Portion of B)
JT1500E9FIF9FModels Gradually raise the pressure applied to the blow off valveand check the valve operationWhen the pressure is low, the blow off valve should not permit air to flowWhen the pressure raises to valve opening pressureit should permit air flowSpring [A] Valve [8] High Compressed Air [C] Air Flow [0] If the blow off valve does not operate as describedreplace it with new one Blow off Valve Opening Pressure (Close - Open) Standard: more than 81 kPa (0.83 kgfcm2)